Wire tightening mechanism of medium-speed wire cutting machine tool

Abstract

The utility model discloses a wire tightening mechanism of a medium-speed wire cutting machine tool, which comprises a mounting frame, two lifting screws are arranged on the mounting frame, a power mechanism connected with one of the lifting screws is arranged on the mounting frame, a transmission cavity is arranged in the mounting frame, and a transmission shaft is arranged in the transmission cavity. The ends of the two lifting screws extend into the transmission cavity and are connected through a transmission mechanism, the two lifting screws are sleeved with nuts in a threaded mode, the nuts are provided with connecting frames through inserting mechanisms, and a tightening roller is arranged between the two connecting frames through a mounting mechanism. And the mounting frame is provided with a pick-and-place opening for facilitating pick-and-place of the connecting frame. According to the utility model, when ascending to the position of the pick-and-place opening, the connecting frames can transversely move to drive the tightening roller to be separated from the nut, and then the two connecting frames are moved out and then separated, so that the tightening roller can be disassembled. By means of the design, the dismounting process of the tightening roller is simple and easy to implement, and the tightening roller can be replaced or maintained conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of wire-cutting machine tools, in particular to a wire tightening mechanism of a medium-length wire-cutting machine tool. Background Art

[0002] Medium-speed wire EDM machines, commonly known as medium-speed wire EDM, are a type of reciprocating high-speed wire EDM machine. They utilize a high-speed reciprocating wire EDM machine with multiple cutting capabilities. They operate by using a continuously moving molybdenum wire (called the electrode wire) as an electrode to erode the workpiece through pulsed spark discharge, removing metal and forming the workpiece.

[0003] Reference Publication (Announcement) Number: CN213646229U, Patent Title: A Wire Tightening Mechanism for a Medium-Sized Wire Cutting Machine Tool. The utility model relates to the technical field of medium-speed wire cutting machines, and in particular to a wire tightening mechanism for a medium-speed wire cutting machine tool, comprising a base, a slide rod, and a tightening drum. A mounting box is provided on one side of the base, and a threaded rod is provided in the mounting box. The bottom end of the threaded rod is rotatably connected to the base, and the top end of the threaded rod extends to the outside of the mounting box. The slide rod is provided on a side of the base away from the mounting box, and a sliding block is slidably engaged with the slide rod. One side of the tightening drum is fixedly connected to the sliding block, and the other side of the tightening drum is provided with a threaded seat. In this solution, the tightening drum cannot be quickly disassembled and assembled. During the daily maintenance of the medium-speed wire cutting machine tool, if the tightening drum needs to be inspected, repaired, or related accessories replaced, the complicated disassembly and assembly process makes the maintenance work extremely cumbersome. This not only prolongs the downtime of the machine tool and affects production efficiency, but may also cause unnecessary interference or damage to other components due to prolonged maintenance operations. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings in the prior art and to propose a wire tightening mechanism for a medium-speed wire cutting machine.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A wire tightening mechanism for a medium-speed wire cutting machine comprises a mounting frame, two lifting screws are provided on the mounting frame, a power mechanism connected to one of the lifting screws is provided on the mounting frame, a transmission cavity is provided inside the mounting frame, the ends of the two lifting screws extend into the transmission cavity and are connected through a transmission mechanism, nuts are threadedly sleeved on the two lifting screws, a connecting frame is provided on the nut through an insertion mechanism, a tightening roller is provided between the two connecting frames through the mounting mechanism, and a pick-up and drop-out port is provided on the mounting frame for convenient removal and placement of the connecting frame.

[0007] Preferably, the power mechanism includes a drive motor mounted on the mounting frame, and the output shaft of the drive motor rotates through the outer wall of the mounting frame and is fixedly connected to the end of one of the lifting screws.

[0008] Preferably, the transmission mechanism includes pulleys mounted on two lifting screws, and the two pulleys are connected by a connecting belt.

[0009] Preferably, the plug-in mechanism comprises an insert block mounted on the nut, and a slot corresponding to the insert block is provided on the surface of the connecting frame that contacts the nut.

[0010] Preferably, the mounting mechanism comprises a mounting rod mounted on the tightening drum, and the connecting frame is provided with a slot corresponding to the mounting rod.

[0011] Preferably, the mounting frame is provided with a vertical rod parallel to the lifting screw, and the vertical rod slides through the nut.

[0012] Beneficial effects of the utility model:

[0013] 1. The two lifting screws can achieve synchronous rotation through the transmission mechanism consisting of a pulley and a connecting belt in the transmission chamber. This collaborative working method ensures the consistency and stability of the entire lifting process, making the tightening operation smoother and avoiding problems such as uneven thread tension caused by asynchrony.

[0014] 2. The access opening on the mounting frame fully considers the convenience of operation. When the tightening mechanism needs to be maintained or adjusted, the operator can easily operate the connecting frame through the access opening, greatly reducing the difficulty and time cost of maintenance and adjustment.

[0015] 3. When the connecting frame rises to the access opening, it can move horizontally, driving the tightening drum and nut to disengage. Then, the two connecting frames are moved out and separated to complete the removal of the tightening drum. This design makes the removal process of the tightening drum simple and easy, and facilitates the replacement or maintenance of the tightening drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a wire tightening mechanism of a medium-speed wire cutting machine tool proposed in the present invention;

[0017] Figure 2 for Figure 1 A schematic diagram of a cross-sectional front view structure;

[0018] Figure 3 for Figure 2 A magnified schematic diagram of the structure at A;

[0019] Figure 4 for Figure 1 A schematic diagram of a cross-sectional structure viewed from above;

[0020] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point B.

[0021] In the figure: 1 mounting frame, 2 lifting screw, 3 vertical rod, 4 pick-up and release port, 5 connecting frame, 6 driving motor, 7 tightening roller, 8 insert block, 9 slot, 10 mounting rod, 11 mounting groove, 12 nut, 13 pulley, 14 connecting belt, 15 transmission chamber. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Reference Figure 1-5 The wire tensioning mechanism for a medium-speed wire cutting machine plays a crucial role in its operation. It primarily comprises a mounting frame 1, which acts as the solid backbone of the entire mechanism, providing stable support for the other components. Two lifting screws 2 are meticulously positioned on this mounting frame, ready to perform lifting tasks.

[0024] Mounting frame 1 is equipped with a power mechanism connected to one of the lifting screws 2. This power mechanism is the source of power for the entire tightening process. Specifically, the power mechanism includes a drive motor 6 mounted on mounting frame 1. Drive motor 6 has a strong and stable power output. Its output shaft rotates through the outer wall of mounting frame 1 and is firmly connected to the end of one of the lifting screws 2. When the drive motor 6 is started, it can smoothly transmit its rotational power to the connected lifting screw 2, providing the original power for subsequent movements.

[0025] Mounting frame 1 is internally provided with a transmission chamber 15. The ends of the two lifting screws 2 extend into this chamber and are connected by a transmission mechanism. This transmission mechanism is crucial for enabling the two lifting screws 2 to work in unison. It comprises pulleys 13 mounted on each lifting screw 2. These pulleys 13 function like two cooperating gears, connected by a connecting belt 14. When one lifting screw 2 begins to rotate under the power mechanism, the other lifting screw 2 also rotates synchronously, driven by the pulleys 13 and connecting belt 14, ensuring consistency and stability throughout the entire lifting process.

[0026] The two lifting screws 2 are both threaded with nuts 12, and the nuts 12 are provided with a connecting frame 5 through an inserting mechanism. The inserting mechanism is an ingenious design to ensure the tight connection between the nuts 12 and the connecting frame 5. It includes an insert block 8 mounted on the nut 12, and a slot 9 corresponding to the insert block 8 is provided on the surface of the connecting frame 5 that contacts the nut 12. This inserting method is like a puzzle. Figure 1 In this way, the insert block 8 is accurately inserted into the slot 9, so that the connection between the connecting frame 5 and the nut 12 is both firm and reliable, and can withstand various forces generated during the tightening process.

[0027] A take-up drum 7 is installed between the two connecting frames 5 via a mounting mechanism. This mechanism provides convenient and stable installation of the take-up drum 7. It includes a mounting rod 10 mounted on the take-up drum 7, and a slot 9 is provided on the connecting frame 5 to correspond with the mounting rod 10. The combination of the mounting rod 10 and the slot 9 ensures that the take-up drum 7 is securely mounted between the two connecting frames 5, enabling it to accurately perform its function of tightening the wire during the tightening operation.

[0028] The mounting frame 1 is provided with a take-out opening 4 for conveniently taking the connecting frame 5 out. The design of this take-out opening 4 fully considers the convenience of operation. When the tightening mechanism needs to be maintained or adjusted, the operator can easily operate the connecting frame 5 through this take-out opening 4.

[0029] In addition, the mounting frame 1 is provided with a vertical rod 3 parallel to the lifting screw 2. The vertical rod 3 acts like a stable guide rail and slides through the nut 12. When the lifting screw 2 drives the nut 12 to rise and fall, the vertical rod 3 can play a good guiding role for the nut 12, preventing the nut 12 from shaking or deflecting during the lifting process, further ensuring the accuracy and stability of the tightening mechanism.

[0030] When the utility model is used, Figure 1 As shown, when the driving motor 6 is started, it can drive the lifting screw 2 connected to its output shaft to rotate, and the other lifting screw 2 rotates by means of the pulley 13 and the connecting belt 14. When the two lifting screws 2 rotate, the nut 12 drives the connecting frame 5 to rise and fall, and the tightening roller 7 rises and falls under the action of the connecting frame 5, thereby playing its function of tightening the silk thread.

[0031] like Figure 1 As shown, when the connecting frame 5 follows the nut 12 to rise to the position of the access port 4, the connecting frame 5 can move laterally, driving the tightening roller 7 to move and disengage from the nut 12. When the two connecting frames 5 are moved out and then separated, the tightening roller 7 can be disassembled.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wire tightening mechanism for a medium-speed wire cutting machine tool, comprising a mounting frame (1), characterized in that: The mounting frame (1) is provided with two lifting screws (2), the mounting frame (1) is provided with a power mechanism connected to one of the lifting screws (2), a transmission cavity (15) is provided inside the mounting frame (1), the ends of the two lifting screws (2) extend into the transmission cavity (15) and are connected through a transmission mechanism, the two lifting screws (2) are both threadedly sleeved with nuts (12), the nuts (12) are provided with a connecting frame (5) through an insertion mechanism, a tightening roller (7) is provided between the two connecting frames (5) through the mounting mechanism, and the mounting frame (1) is provided with a take-out port (4) for conveniently taking in and putting in the connecting frame (5).

2. The wire tightening mechanism of the medium-speed wire cutting machine according to claim 1, characterized in that: The power mechanism comprises a drive motor (6) mounted on the mounting frame (1); an output shaft of the drive motor (6) rotates through the outer wall of the mounting frame (1) and is fixedly connected to the end of one of the lifting screw rods (2).

3. The wire tightening mechanism of the medium-speed wire cutting machine tool according to claim 2, characterized in that: The transmission mechanism comprises a pulley (13) mounted on two lifting screw rods (2), and the two pulleys (13) are connected via a connecting belt (14).

4. The wire tightening mechanism of the medium-speed wire cutting machine according to claim 3, characterized in that: The plug-in mechanism comprises an insert block (8) mounted on a nut (12); a slot (9) corresponding to the insert block (8) is provided on the surface of the connecting frame (5) in contact with the nut (12).

5. The wire tightening mechanism of the medium-speed wire cutting machine according to claim 4, characterized in that: The mounting mechanism comprises a mounting rod (10) mounted on the tightening roller (7), and the connecting frame (5) is provided with a slot (9) corresponding to the mounting rod (10).

6. The wire tightening mechanism of the medium-speed wire cutting machine according to claim 5, characterized in that: The mounting frame (1) is provided with a vertical rod (3) parallel to the lifting screw rod (2), and the vertical rod (3) slides through the nut (12).

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